Hoisting apparatus.



No. 729,868. A PATBNTED JUNE 2,1903.

- 0. w. HUNT.

HOISTING APPARATUS.

APPLICATION rI'LnD IEB. 20.1902. 110 MODEL. V a sums-sum 1- wh m Leo m vcau k 6 V W W M l d F y THE NORRIS PETKRS co. PnoTo-umw wAsHmcTum a. c

No. 729,868. PATENTED JUNE 2, 1903.

G. W. HUNT.

IHOISTING APPARATUS.

APPLIUATION IIL BD FEB. 201 1902.

N0 MODEL. 3 SHEETS-SHEET 2 No 729,868. Y PATENTED JUNE 2, 1903. j

- 0. W. HUNT.

HOISTING APPARATUS.

APPLICATION FILED FEB. 20, 1902.

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N0 MODEL.

No. 729,868. I

UNITED STATES Patented June 2, 1903.

PATENT FFICE.

CHARLES WALLACE HUNT, OF WEST NEW BRIGHTON, NEW YORK.

HOISTING APPARATUS.

SPECIFICATION formingpart of Letters Patent No. 729 ,868, dated June 2,1903. Application filed February 20, 1902. Serial No. 94,873. (Nomodel.)

To all whom it may concern:

Be it known that I, CHARLES WALLACE HUNT, a citizen of the UnitedStates, residing in West New Brighton, borough of Richmond, city of NewYork, State of NewYork, have invented certain new and usefulImprovements in Hoisting Apparatus, of which the following is aspecification, reference being had to the accompanying drawings, forminga part hereof. I

This invention relates to hoisting apparatus of the general character ofthat shown in Letters Patent of the United StatesNo. 624,811, dated May9, 1899, in which the load is raised or lowered and is translated in asubstantially horizontal plane and in which provision is made for theopening and closing of the bucket or shovel.

The object of the invention is to improve the construction andarrangement of such apparatus,so as to facilitate the operation thereof,to reduce the work to be performed by the driving means, and to relievethe stresses on the mechanism.

The invention will be more fully described hereinafter with reference tothe accompanying drawings, in which for the purposes of explanation itis represented as embodied in a suitable structure, and in which- Figurel is a view, partly in elevation and partly in outline, of so much of acomplete structure as is necessary to enable the invention to beunderstood, the driving means being represented as electric motors.Figs. 2 and 3 are respectively an end elevation and a plan viewillustrating the application of steam-motors as the driving means, Fig.2 being partly in section. Fig. 4 is a detail view illustrating theconnection of the outhaulrope to the trolley overa sheave carried on thetrolley-frame. Fig. 5 is a plan view of the arrangement of the apparatusas shown in Fig. 1.

In the structure represented in the drawings two drums at and b forraising and lowering theload and for opening and closing the bucket orshovel, respectively, are represented as mounted upon a common shaft 0,the drum 6 being preferably fixe'd to the shaft 0 to rotate therewith,while the drum a is preferably loose onthe shaft c. Each drum a and b isrepresented as having secured to it a gear a and b, respectively, to bedriven through suitable intermediate gearing from corresponding motors aand 71 respectively, and the drums may be coupled mechanically, as by asuitable clutch. Each .drum is also preferably provided with anindependent brake, (marked at and e, respectively,) which may becontrolled through suitable mechanism not necessary to be describedherein. A

third drum f for effecting the translation of the load in one directionor the other is arranged to be coupled to the drum 6 to rotate therewithwhen desired and for this purpose may be loosely mounted -on the shaft 0and be coupled therewith by means of a clutch g, the fast member ofwhich is fixed to the shaft 0. The clutch may be operated by anysuitable mechanism, not necessary to be described, the operating-handletherefor being indicated at h. The drum f is also provided with a brake1 which may be controlled by any suitable means. A rope for opening andclosing the bucket or shovel is extended from the drum 1) over aguide-sheave k and thence over a guide-sheave k on the trolley '22 tothe opening and closing devices on the bucket, which may be of ordinaryconstruction and need not be further described. The hoisting-rope m,which is wound on the drum 0t in the same direction as the rope 70 onthe drum 1), passes over a suitable guide-sheave m and thence to thetrolley-frame n, as shown in Fig. 1, or over a sheave m on thetrolleyframe at, which is arranged to travel, as usual, on a suitabletrack or support 0. The free end of the hoisting-rope m is connected tothe load in any suitable manner. The rope p for efiecting thetranslation of the load is connected'to the drumfand is wound thereoninthe opposite direction from that in which the hoisting-rope m is woundon the drum a. From the drum f the rope 19 passes over suitableguide-sheaves p and p and is then connected to the trolley-frame 12instead of passing over a sheave thereon to the load, as has been usualheretofore. y The rope 19 may be attached directly to the trolley-frame,as shown in Fig. 1, or it may IOO pass over a sheave carried on thetrolleyframe and be attached to a fixed point, as shown in Fig. 4, inwhich case the drum f should be twice as large as the drum 1).

It will be obvious that any suitable form of braking, clutching, anddriving mechanisms Y may be employed and that the drums may be arrangedin any convenient manneras, for example, in tandem-that is, with theiraxes parallel, the driving-gears being arranged accordingly. Onealternative form of driving mechanism is represented in Figs. 2 and 3,in which steam-motors 'r and r are indicated as the source of power forthe respective drums a and b. As represented in Fig. 3, the steam-motorsmay be coupled to the counter-shaft s, which is provided with a clutcht, a brake u, and a driving-pinion c for each drum or and 1), suitablemeans (not necessary to be shown) being provided for controlling theseveral clutches and brakes. By this arrangement, as will be obvious,the drums at and b may be operated and controlled as desired. The drum fin this construction may be mounted upon the common shaft 0, as beforedescribed, and provided with a clutch g and a brake 2' for controllingits rotation.

Mention is made herein of a shovel to contain the load and to be openedor closed by the rope is; but it will be understood that such a shovelis merely representative of the class of well-known devices of thischaracter which are adapted to be controlled bya rope from the hoistingmechanism for the purpose ofdumping the load whenever desired, dumpingbuckets and skips being other examples of this class of devices.

In the operation of the improved apparatus drum b is first started towind up the rope is sufficiently to close the shovel in which the coalor other material is to be handled. The drum a is then started and windsup the hoisting-rope m at the same rate, either taking a part of theload or not, as may be desired. During the hoisting of the load aninward stress is put upon the trolley, but is met until such time as theload is to be translated by the rope which is attached to the trolleyand to the drum f, the latter being held from rotation by its brake ordetaining device. When it is desired to bring the trolley and suspendedload inward, the drum fis coupled to the drum 1) to rotate therewith bysuch means as the clutch g on the shaft 0. The rope 19 being wound onthe drum fin a direction opposite to that in which the rope is is woundon the drum 1), it is obvious that the rope 19 will be paidout as fastas the ropes 7c and m are wound up, so that the inward movement of thetrolley under the stress of the ropes 7c and m will be permitted. If itis desired to translate the load outward, the driving means arereversed, so

that the ropes la and m are paid out as fast as the rope p is wound up,the load being thereby held at the same height. If it is desired to movethe load in a diagonal direction, the drum f may be allowed to slip (ifits clutch acts frictionally) while the other drums are hoisting orlowering. It will be obvious that the stress of the rope p, tending torevolve the drum f and shaft 0 in one direction, is balanced by thestress of the ropes 7c and m, tending to revolve the drums a and I)together with the shaft 0 in the opposite direction. The drum f istherefore in balance with the drums a and b, with torsion stress on thedrum-shaft. Under these conditions the motor is run forward or backwardto move the trolley inward or outward, as may be desired, and has toovercome only the friction of the trolley, ropes, and sheaves. When theshovel is over the dumping-place, the drums CL and f are held stationaryby their respective brakes or detaining devices and the drum 1) isrotated alone in a direction to cause the shovel or bucket or skip todump its contents. After this action the several drums are operated, asabove described, to move the trolley to the desired point, and the drumf is then held by its detaining device, while the drums a and b areallowed to rotate backward to lower the shovel.

Various changes in the construction and arrangement of the several partsof the improved apparatus will readily suggest themselves, and it istherefore to be understood that the invention is not limited to theparticular construction and arrangement shown and described herein.

I claim as my invention 1. A hoisting apparatus, comprising a trolley, asupport therefor, a shovel or bucket, a drum and rope for hoisting theshovel, a drum and rope for controlling the shovel or bucket, both ofsaid ropes being wound on their respective drums in the same directionand passing over the trolley, means for driving said drums eitherseparately or together, means for holding said drums from rotation, athird drum and rope for effecting translation of the load,- the ropepassing from said drum over an outer guide to the trolley and beingwound on its drum in a direction opposite to the winding of the othertwo ropes on their drums, means to couple the third drum to one of theother two drums to rotate therewith, and means to hold the third drumfrom rotation, substantially as described.

2. In a hoisting apparatus, comprising a trolley, asupport therefor, ashovel or bucket, a drum and rope for hoisting the shovel, a drum andrope for controlling the shovel or bucket, both of said ropes beingwound on their respective drums in the same direction and passing overthe trolley, means for driving said drums either separately or together,means for holding said drums from rotation,

adriving'shaft upon which the hoisting-drum means to hold the third drumfrom rotation,

is fixed, a third drum and rope for effecting substantially asdescribed. [o translation of the load, the rope passing over Thisspecification signed and witnessed this an outer guide to the trolleyand being wound 8th day of February, A. D. 1902.

5 on its drum in a direction opposite to the CHARLES WALLACE HUNT.

winding of the other two ropes on their re- In presence of spectivedrums, a clutch to couple the third ANTHONY N. JESBERA,

drum to said shaft to rotate therewith, and M. A. BRAYLEY.

